5571221755 has 24 divisors (see below), whose sum is σ = 7601907600. Its totient is φ = 3912068160.

The previous prime is 5571221749. The next prime is 5571221767.

It is a happy number.

5571221755 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5571221755 - 2¹⁷ = 5571090683 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141225 + ... + 176314.

It is an arithmetic number, because the mean of its divisors is an integer number (316746150).

Almost surely, 2^5571221755 is an apocalyptic number.

5571221755 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5571221755 is a deficient number, since it is larger than the sum of its proper divisors (2030685845).

5571221755 is a wasteful number, since it uses less digits than its factorization.

5571221755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317595 (or 317584 counting only the distinct ones).

The product of its digits is 122500, while the sum is 40.

The square root of 5571221755 is about 74640.6173272971. The cubic root of 5571221755 is about 1772.7608350114.

The spelling of 5571221755 in words is "five billion, five hundred seventy-one million, two hundred twenty-one thousand, seven hundred fifty-five".